package com.riteny.grant.phoneverifycode;

import org.springframework.security.authentication.*;
import org.springframework.security.core.Authentication;
import org.springframework.security.oauth2.common.exceptions.InvalidGrantException;
import org.springframework.security.oauth2.provider.*;
import org.springframework.security.oauth2.provider.token.AbstractTokenGranter;
import org.springframework.security.oauth2.provider.token.AuthorizationServerTokenServices;

import java.util.LinkedHashMap;
import java.util.Map;

public class PhoneVerifyCodeTokenGranter extends AbstractTokenGranter {

    private static final String GRANT_TYPE = "phone_verify_code";

    private static AuthenticationManager authenticationManager;

    public PhoneVerifyCodeTokenGranter(AuthenticationManager authenticationManager, AuthorizationServerTokenServices tokenServices, ClientDetailsService clientDetailsService
            , OAuth2RequestFactory requestFactory) {
        this(tokenServices, clientDetailsService, requestFactory, GRANT_TYPE);
        this.authenticationManager = authenticationManager;
    }

    protected PhoneVerifyCodeTokenGranter(AuthorizationServerTokenServices tokenServices, ClientDetailsService clientDetailsService,
                                          OAuth2RequestFactory requestFactory, String grantType) {
        super(tokenServices, clientDetailsService, requestFactory, grantType);
    }

    @Override
    protected OAuth2Authentication getOAuth2Authentication(ClientDetails client, TokenRequest tokenRequest) {

        Map<String, String> parameters = new LinkedHashMap<String, String>(tokenRequest.getRequestParameters());
        String phone = parameters.get("phone");//这里接收手机号
        String verifyCode = parameters.get("verifyCode");//这里接收验证码
        // Protect from downstream leaks of password
        parameters.remove("verifyCode");

        Authentication userAuth = new UsernamePasswordAuthenticationToken(phone, verifyCode);
        ((AbstractAuthenticationToken) userAuth).setDetails(parameters);
        try {
            userAuth = authenticationManager.authenticate(userAuth);
        } catch (AccountStatusException ase) {
            //covers expired, locked, disabled cases (mentioned in section 5.2, draft 31)
            throw new InvalidGrantException(ase.getMessage());
        } catch (BadCredentialsException e) {
            // If the username/password are wrong the spec says we should send 400/invalid grant
            throw new InvalidGrantException(e.getMessage());
        }
        if (userAuth == null || !userAuth.isAuthenticated()) {
            throw new InvalidGrantException("Could not authenticate user: " + phone);
        }

        OAuth2Request storedOAuth2Request = getRequestFactory().createOAuth2Request(client, tokenRequest);
        return new OAuth2Authentication(storedOAuth2Request, userAuth);
    }
}
